I will refer you to "Borgeson" for components which they offer. Most of the components on the market are from them as OEM. They make anything steering related.
Quoted from the web site.
Borgeson Universal Steering Components 24" Extended Length Part #: 450024
"Borgeson offers telescoping shaft assemblies in 24” and 36” overall lengths. These shafts can be used in a variety of applications and make installation and removal of steering system components simple and easy. The telescopic action also acts as a collapsible shaft offering an added measure of safety. One end of the assembly is a 3/4”DD shaft and the other end is a 1”DD tube. The assembly can be trimmed to fit shorter applications. Telescoping shafts are available in steel only."